81909412

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 158556160

約数和(自身を除く): 76646748

約数列:

[1, 2, 4, 13, 26, 52, 79, 127, 157, 158, 254, 314, 316, 508, 628, 1027, 1651, 2041, 2054, 3302, 4082, 4108, 6604, 8164, 10033, 12403, 19939, 20066, 24806, 39878, 40132, 49612, 79756, 130429, 161239, 259207, 260858, 322478, 518414, 521716, 644956, 1036828, 1575181, 3150362, 6300724, 20477353, 40954706, 81909412]

約数ペア:

[(1, 81909412), (2, 40954706), (4, 20477353), (13, 6300724), (26, 3150362), (52, 1575181), (79, 1036828), (127, 644956), (157, 521716), (158, 518414), (254, 322478), (314, 260858), (316, 259207), (508, 161239), (628, 130429), (1027, 79756), (1651, 49612), (2041, 40132), (2054, 39878), (3302, 24806), (4082, 20066), (4108, 19939), (6604, 12403), (8164, 10033)]